Heater for vehicles



Now-25, 1930. F. c; HOWARD HEATER FOR VEHICLES Filed Oct. 19. 1927 lllllllllLlli features hereinafter setforth, and m'ore par-t Patented Nov. 25, 1930 UNI D-ST E PAT NToFFrCEJ l nnAnK 0.30MB, or CHICAGO, ILLINOIS HEATER nonvnnrotns Application filed Q ar 19, 1927; Serial No. 227,676. l l

V l Theiinvention relates tojheater for vehi clesf I p i 1 The object of the invention is to provide a heater by which air will be heated from the l a 5 exhaust pipeof the internal combustion mo 7 tor and conducted into thebody of the vehicle, which may be'easily installed, which is efiicient in operation, and which canbe producedata low cost,

The invention consists inthe several novel Lticularlydefined by claiins. at the conclusion "'hereoffif 'j j In thedrawing: Fig/l is a cliagralnniatic view ofthe invention applied to a motor drivenvehicle. Fig. 2 is a transversesection through the heater and {the exhaust pipe.

Fig. 3 is an elevation of one .of the sections a forming the tubular heater; Fig. 4is'an end view of the deflector connectedto theair inlet for the heater) Fig. 5 is a section on line 55 of Fig-4: Fig. 6 is a section online 6+6 of Fig. 4. i Fig. 7 is aplan'of' the outlet valve for controlling the delivery ofheatedair into the body of the vehicle, and Fig.8 is'a'section,

The invention is exemplified in a heater applied to the exhaust pipe at for "carrying 'ofi' the productsof combustion from the internal combustion jmotor of usual construction for equipped with the usual fan 0 for drawing airthrough' the radiator forhoohn'g the water around thernotor, whichis dr ven as well understood n the art.

The heater comprises tubnlarineniber d which is;for1ned of complementary semi-c3 lindrical sections cl and 03 The sections are propelling the vehiclet; The vehicle is" are integrally formed. ,7 a a 'Aninlet nippled is formediby complehelical course. The sections are-provided with integral inwardly extending lug'sfd which project slightlyinwardof the inner edge of the helical rib cl so that the helical rib will be spaced suflicientlyhfronithe"ex haust pipe to permit some of the airto pass between the. ribs and the pipe. "This,- in practice, has been found to result inefliciency in heat transmission. f This exemplifies a tub u larinelnb'er' formed of sectionsadapted to be applied to an exhaust pipe which is simple in construction and in whichariband sections mentary semicylindrical portions integrally e5 formed with the-sections. This nipple' is oblique. to theaxis of the mernberd and directs air into one end ofthe memberdl An outlet nipple 03 9 is-forined of semi-cylindrical TOI'IHGCLOZE'HJI aluminum casting,' is provided preferably formed of cast aluminum and arei' provided with lugs d Bolts 07*, passingthrough said lugs, are adapted to secure the sections together to form a tubular member for enclosing a portion ofthe exhaust pipe.

. outlet nipple d ofthe heater; section of flexible hose 9 leads from 'oneb'ranch of the At one end, the sectionsare each provided" 'with a rib 01 to close the chamber between the piperandsaidcmember, and at its other end they are provided with a similar rib (Z r i to close the other end. Themember is pro-" 1 vided with a helical rib 6Z which-projects inwardly from the sections to cause the air forced through the member dto travel in a the air intotheheater.

extensions of the sections of the meinber at-701 a fan 0 into the inlet pipe efthe nipplebeing disposed at one side of, or axially ofi's'et with respectjto the rim of :the defiectorsothat'the airentering it h'as a tendency to swirl. This swirling movement of the air has been found in practice to result in the efficient forcing of A T-fitting g is -suitably connected tOithe fitting g to; a valve h. *A short flexible-pipe section g leads from the otherfnemher of fitting? to a valveh The valve His dis-95 posed in the foot-board in front of the drivfers seat, and thevalve his usually located in thefloor rearwardly ofthedriversseat.

The flexible pipesections g and g iare'each. connected to fitting "ga;ndj"to'= the v'alves by clamped around the exhaust pipe 0,.

cotter pins 0 similarly to the connections for the inlet pipe sections 0. By employing these cotter pins, the parts of the heater may be readily assembled and disassembled when desired.

Each valve h, h comprises a nipple 72 to receive one of the flexible pipe sections, an annular flange h adapted to be secured to the floor of the vehicle by screws h a wall 7L5 having openings h therein, and a registry valve 7L pivoted by a bolt it to the Wall if and provided with openings h adapted to be brought into and out of registry with the openings it to control the delivery 0t air into the body of the vehicle.

In applying the improved heater to a' vehicle, the sections of the member (Z are The deflector f is secured by a bracket f to any suitable projection on the motor, and the valves are inserted in holes cutin the floor of the vehicle. The flexible pipe sections for conveying air from the deflector to the heater and from the heater to the valves may be readily installed by the insertion of the cotter pins. 6.

In operation, a portion of the current of air produced by the tan 0 is directed by the deflector f into the intake pipe 6. From this pipe, it passes into one'end of the heater member (Z. Some of the air is directed in a helical path by the rib cl", and some is directed into close contact with the exhaust pipe by a'small space between the rib and the pipe. In transit through the member (Z, the air Will be thoroughly heated for delivery into the car through pipes g and 9 To control the operation of the heater, it is only necessary to open or close the registry valves [1/7. This can be done by the occupants while in the car, thus dispensing with indirect connections for controlling the heater.

The invention is not to be understood as restricted to the details set forth, since thesemay be modified within the scope of the appended claims, without de 'rart'ing' from the spirit and scope of the invention.

Having thus described the 1nvent1on, what I claim as new and desire to secure by Letair from the motor fan into one end of said' member, and means connected to the other end of the member to convey the heated air into the body of the vehicle.

' 2. In a heater for a vehicle having an internal combustion motor, the combination of a tubular heater member composed of cast sections adapted to extend around the ex haust pipe of an internal combustion motor, means integral with the sections forming a helical rib on the inner periphery of the member, to direct air helically around the exhaust pipe, means to hold the member so that the rib is spaced from the pipe to permit some of the air to pass between the rib and the pipe, means to direct air from a fan into one end of said member, and means connectedto the other end of the member to convey the heated air into the body of the vehicle.

3. In a heater for a vehicle having an internal combustion motor, the combination of a tubular heater member composed of cast sections adapted to extend around the 6X- haust pipe of the motor, means integral with the sections forming a helical rib on the inner periphery of the member, to direct air helically around the exhaust pipe, means integral with the sections forming an inlet nipple at one end of the member, means to direct air from a fan into said inlet, means integral with the sections forming an outlet nipple adjacent the other end of the member, and means connected to the outlet nipple to convey the heated air into the body of the vehicle.

4. In aheater for a vehicle having an internal combustion motor, the combination of a tubular heater member adapted to extend around the exhaust pipe of the motor, an inlet nipple at one end of the member, a deflector adapted to receive air from the motor fan and comprising a substantially poly onal shaped rim portion and an outlet nipple, said outlet nipple being positioned adjacent to one of the corner part-s of the polygonal rim portion and joined to said rim portion by walls which are arranged so that the air from the fan has a tendency to swirl when passing through the outlet nipple, a connection between the two nipples, and means to convey the heated air from the other end of the heater member to the body of the vehicle.

Signed at Chicago, Illinois, this 6th day of October, 1927.

FRANK C. HOWARD. 

